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5+√3upon 7-4√3 -5+√3 upon 7+4√3 |
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Answer» do cross multiplication Step-by-step explanation: ((5+√3)*(7+4√3)) - ((5+√3)*(7-4√3)) / (7-4√3)*(7+4√3) = 5+√3*(7+4√3-7+4√3) / 7²-(4√3)² = (5+√3)(2*4√3) / 49-48 = (5*8√3)+(√3*8√3) = 40√3+24 |
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